Green Pieces Puzzles are Earth friendly 500 piece jigsaw puzzles which are imbedded with wildflower seeds. When they find their way to a landfill, or when you plant them in your garden, they will actually give back to the environment by growing over sixteen species of wildflowers. Each puzzle features a mosaic image with an environmental message. Tiger in Your Tank makes a statement about the number of vehicles being only a fraction of the number of animals about to become extinct due to poor emissions control.